NZ788015A - Compact prismatic optical sight with internal zeroing method - Google Patents

Compact prismatic optical sight with internal zeroing method

Info

Publication number
NZ788015A
NZ788015A NZ788015A NZ78801520A NZ788015A NZ 788015 A NZ788015 A NZ 788015A NZ 788015 A NZ788015 A NZ 788015A NZ 78801520 A NZ78801520 A NZ 78801520A NZ 788015 A NZ788015 A NZ 788015A
Authority
NZ
New Zealand
Prior art keywords
optical system
point
aperture stop
prism assembly
inverting prism
Prior art date
Application number
NZ788015A
Other versions
NZ788015B2 (en
Inventor
Gregory Marshall
Original Assignee
Raytheon Canada Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Raytheon Canada Ltd filed Critical Raytheon Canada Ltd
Publication of NZ788015A publication Critical patent/NZ788015A/en
Publication of NZ788015B2 publication Critical patent/NZ788015B2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/06—Rearsights
    • F41G1/14—Rearsights with lens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/06—Rearsights
    • F41G1/16—Adjusting mechanisms therefor; Mountings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/30—Reflecting-sights specially adapted for smallarms or ordnance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/38—Telescopic sights specially adapted for smallarms or ordnance; Supports or mountings therefor
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Telescopes (AREA)
  • Lenses (AREA)
  • Lens Barrels (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

An optical system includes an aperture stop configured to direct light through the optical system, an inverting prism assembly configured to receive light from the aperture stop and direct light through the optical system, and a field stop configured to receive light from the inverting prism assembly and direct light through the optical system to an operator of the optical system. At least one first lens including an entrance lens is positioned in front of the aperture stop and a lens is positioned behind the aperture stop. A point-of-impact is identified in object space and a point-of-aim is identified in afocal space of the optical system. The inverting prism assembly is configured to be pivoted about a center of the aperture stop to effect alignment of the point-of-impact and point-of-aim in the afocal space so that the point-of-aim is coincident with the optical axis. This ability ensures that the point of aim (POA) is always aligned with the point of impact (POI) which is crucial for accuracy.

Claims (19)

What is claimed is:
1. An optical system comprising: an aperture stop configured to direct light through the optical system; an inverting prism assembly configured to receive light from the aperture stop and direct light through the optical system; a field stop configured to receive light from the inverting prism assembly and direct light through the optical system to an operator of the optical system, and at least one first lens including an entrance lens positioned in front of the aperture stop and a lens positioned behind the aperture stop; wherein a point-of-impact is identified in object space and a point-of-aim is identified in afocal space of the optical system, the inverting prism assembly being configured to be pivoted about a center of the aperture stop to effect alignment of the point-of-impact and point-of-aim in the afocal space so that the point-of-aim is coincident with an optical axis.
2. The optical system of claim 1, further comprising at least one first lens configured to receive light from an object and direct light through the aperture stop and to the inverting prism assembly.
3. The optical system of claim 2, further comprising at least one second lens configured to receive light from the field stop and direct light to the operator of the optical system.
4. The optical system of claim 3, wherein the at least one second lens includes an eyepiece lens positioned behind the field stop.
5. The optical system of claim 3, further comprising a support housing configured to support the aperture stop, the at least one first lens, the inverting prism assembly, the field stop, and the at least one second lens.
6. The optical system of claim 5, further comprising a mechanism configured to move the inverting prism assembly.
7. The optical system of claim 6, wherein the mechanism includes a prism mount cell having surfaces configured to engage surfaces of the inverting prism assembly.
8. The optical system of claim 7, wherein the prism mount cell is configured to rotate with respect to the housing.
9. The optical system of claim 7, wherein the mechanism further includes a front rotation actuator and a rear rotation actuator to move the inverting prism assembly about a rotation point located at the aperture stop.
10. The optical system of claim 1, wherein the inverting prism assembly includes two prisms separated by an air gap.
11. The optical system of claim 5, wherein the support housing includes a generally cylindrical structure.
12. A method of aligning a point-of-impact and a point-of-aim of an optical system, the method comprising: directing light through an aperture stop; directing light from the aperture stop to an inverting prism assembly; directing light from the inverting prism assembly through a field stop configured to direct light to an operator of the optical system; and pivoting the inverting prism assembly about a center of the aperture stop to effect alignment of the point-of-impact and point-of-aim in the afocal space so that the point-of-aim is coincident with an optical axis; wherein the optical system comprises at least one first lens including an entrance lens positioned in front of the aperture stop and a lens positioned behind the aperture stop.
13. The method of claim 12, wherein a point-of-impact is identified in object space and a point-of-aim is identified in afocal space of the optical system.
14. The method of claim 13, further comprising directing light from an object through the aperture stop and to the inverting prism assembly.
15. The method of claim 14, further comprising directing light from the field stop to the operator of the optical system.
16. The method of claim 15, wherein pivoting the inverting prism assembly is achieved by a mechanism configured to move the inverting prism assembly.
17. The method of claim 16, wherein the mechanism includes a prism mount cell having surfaces configured to engage surfaces of the inverting prism assembly.
18. The method of claim 17, wherein the prism mount cell is configured to rotate with respect to the housing.
19. The method of claim 17, wherein the mechanism further includes a front rotation actuator and a rear rotation actuator to move the inverting prism assembly about a rotation point located at the aperture stop.
NZ788015A 2020-09-10 Compact prismatic optical sight with internal zeroing method NZ788015B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/688,735 US11320239B2 (en) 2019-11-19 2019-11-19 Compact prismatic optical sight with internal zeroing method
PCT/CA2020/000109 WO2021097553A1 (en) 2019-11-19 2020-09-10 Compact prismatic optical sight with internal zeroing method

Publications (2)

Publication Number Publication Date
NZ788015A true NZ788015A (en) 2024-09-27
NZ788015B2 NZ788015B2 (en) 2025-01-07

Family

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Also Published As

Publication number Publication date
EP4062122A1 (en) 2022-09-28
JP7411083B2 (en) 2024-01-10
WO2021097553A1 (en) 2021-05-27
AU2020387736B2 (en) 2025-12-04
EP4062122A4 (en) 2023-12-20
JP2023502129A (en) 2023-01-20
AU2020387736A1 (en) 2022-05-26
US11320239B2 (en) 2022-05-03
EP4062122B1 (en) 2026-01-07
US20210148674A1 (en) 2021-05-20
CA3161774A1 (en) 2021-05-27

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Legal Events

Date Code Title Description
PSEA Patent sealed
RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 10 SEP 2026 BY ANAQUA SERVICES

Effective date: 20250820